package org.springframework.boot.actuate.endpoint.web.reactive;
import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Set;
import org.springframework.boot.actuate.endpoint.web.EndpointMapping;
import org.springframework.boot.actuate.endpoint.web.annotation.ControllerEndpoint;
import org.springframework.boot.actuate.endpoint.web.annotation.ExposableControllerEndpoint;
import org.springframework.boot.actuate.endpoint.web.annotation.RestControllerEndpoint;
import org.springframework.util.Assert;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.reactive.HandlerMapping;
import org.springframework.web.reactive.result.condition.PatternsRequestCondition;
import org.springframework.web.reactive.result.method.RequestMappingInfo;
import org.springframework.web.reactive.result.method.annotation.RequestMappingHandlerMapping;
import org.springframework.web.util.pattern.PathPattern;
public class ControllerEndpointHandlerMapping extends RequestMappingHandlerMapping {
private final EndpointMapping endpointMapping;
private final CorsConfiguration corsConfiguration;
private final Map<Object, ExposableControllerEndpoint> handlers;
public ControllerEndpointHandlerMapping(EndpointMapping endpointMapping,
Collection<ExposableControllerEndpoint> endpoints, CorsConfiguration corsConfiguration) {
Assert.notNull(endpointMapping, "EndpointMapping must not be null");
Assert.notNull(endpoints, "Endpoints must not be null");
this.endpointMapping = endpointMapping;
this.handlers = getHandlers(endpoints);
this.corsConfiguration = corsConfiguration;
setOrder(-100);
}
private Map<Object, ExposableControllerEndpoint> getHandlers(Collection<ExposableControllerEndpoint> endpoints) {
Map<Object, ExposableControllerEndpoint> handlers = new LinkedHashMap<>();
endpoints.forEach((endpoint) -> handlers.put(endpoint.getController(), endpoint));
return Collections.unmodifiableMap(handlers);
}
@Override
protected void initHandlerMethods() {
this.handlers.keySet().forEach(this::detectHandlerMethods);
}
@Override
protected void registerHandlerMethod(Object handler, Method method, RequestMappingInfo mapping) {
ExposableControllerEndpoint endpoint = this.handlers.get(handler);
mapping = withEndpointMappedPatterns(endpoint, mapping);
super.registerHandlerMethod(handler, method, mapping);
}
private RequestMappingInfo withEndpointMappedPatterns(ExposableControllerEndpoint endpoint,
RequestMappingInfo mapping) {
Set<PathPattern> patterns = mapping.getPatternsCondition().getPatterns();
if (patterns.isEmpty()) {
patterns = Collections.singleton(getPathPatternParser().parse(""));
}
PathPattern[] endpointMappedPatterns = patterns.stream()
.map((pattern) -> getEndpointMappedPattern(endpoint, pattern)).toArray(PathPattern[]::new);
return withNewPatterns(mapping, endpointMappedPatterns);
}
private PathPattern getEndpointMappedPattern(ExposableControllerEndpoint endpoint, PathPattern pattern) {
return getPathPatternParser().parse(this.endpointMapping.createSubPath(endpoint.getRootPath() + pattern));
}
private RequestMappingInfo withNewPatterns(RequestMappingInfo mapping, PathPattern[] patterns) {
PatternsRequestCondition patternsCondition = new PatternsRequestCondition(patterns);
return new RequestMappingInfo(patternsCondition, mapping.getMethodsCondition(), mapping.getParamsCondition(),
mapping.getHeadersCondition(), mapping.getConsumesCondition(), mapping.getProducesCondition(),
mapping.getCustomCondition());
}
@Override
protected boolean hasCorsConfigurationSource(Object handler) {
return this.corsConfiguration != null;
}
@Override
protected CorsConfiguration initCorsConfiguration(Object handler, Method method, RequestMappingInfo mapping) {
return this.corsConfiguration;
}
}